During the drug deal, the four men began to argue and it quickly escalated into a physical altercation. Brown reportedly opened fire, shooting one of the men, identified as 20-year-old Jacquerious Mitchell in the chest. At that point, another one of the men, 22-year-old Thaddeous Green returned fire and shot Brown multiple times. He then grabbed a backpack and Brown's gun before fleeing in a car, which was being driven by 32-year-old Michael Diaz Mitchell.

They dropped Jacquerious at a hospital, where he was taken into custody. Officials also arrested Michael Mitchell, but Green remains at large.

"As you know, there's been speculation and rumors that have been shared by community leaders claiming that Mr. Brown's death was related to the Amber Guyger trial, and somehow the Dallas Police Department was responsible," Moore said. "I assure you that is simply not true. And I encourage those leaders to be mindful of their actions moving forward because their words have jeopardized the integrity of the city of Dallas as well as the Dallas Police Department."